Paper-making machine.



PATENTED JULY 3, 1906.

W. F. PIGKLES. PAPER MAKING MACHINE.

APPLICATION IILED JULY24. 1905.

W awn UNITED STATES PATENT orrron.

PAPER-MAKING MACHINE.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed July 24,1905. $erial No. 271,117.

To all whom it 7721a, concern:

Be it known that I, WrLLiAu F. PIoKLEs, a citizen of the United States, and a resident of Buckland, in the county of Hartford and State of Connecticut, have invented an Improvement in Paper-Making Machines, of which the following is a specification.

My invention relates more especially to the class of devices for regulating the drying of the web of paper as it passes through a paper-making machine; and the object of my invention is to provide a simple and effective device for accomplishing this result and for insuring the drying of the paper to a uniform degree throughout. A form of device in the use of which these objects may be attained is illustratedin the accompanying drawings, in which Figure 1 is a view in elevation of a portion of the frame of a papenmaking machine, showing my improved regulator attached thereto. Fig. 2 is a detail view, in vertical section, through the regulator on aplane passing through the axis of the gears. Fig. 3 is a detail view, in horizontal section, on a plane passing through the axis of the upper 'ear.

In the accom anying drawings t e numeral 1 denotes t e frame of the machine, a portion of which only is shown herein sufficient for a proper illustration and description of the invention. The usual number of cylinders for drying the web of paper as it passes through the machine are supported in the frame. One cylinder 2 only, however, is shown herein. Heat is applied to this cylinder in any well-known manner. The web of paper 3 passes about the several cylinders in the usual manner, passing about the cylinder 2, and a tension-roll 4 is mounted in position to engage the web. This roll is mounted at each end in hangers 5, depending from a supporting-rod 6, extending through the machine from side to side and supported in the side parts of or brackets 1 on the frame. Only one end of the rod 6 and tension-roll 4 is shown herein. The hangers 5 are secured to the rod 6 and inside of the frame 1, and a gear-casing 7 is also secured to the rod 6, the latter having a permitted rocking movement in its bearings in the side parts of the frame im arted through movement of the tensionrol 4. The shaft 8 of the tension-roll 4 proj ects into the gear-case 7 and bears a gear 9, secured thereto, that meshes with a gear 10, mounted in the gear-case and on a stud 11,

rotatably mounted in a recess in the rod 6. This stud is reduced as to that part located in said recess, and the larger outer end of the stud projects through the gear-case.

An" extension 12 projects from the gearcase, and a pendulum-support 13 extends upward therefrom. The extension 12 forms a support for a screw-threaded shaft 14:, one end of which bears a double-faced ratchetwheel 15 and the other end a hand-wheel 16, by means of which the shaft may be rotated by hand when desired. A nut 17 is mounted on the shaft engaging the screw-threads thereon, and this nut bears a pendulum-actuator 18, that consists of a plate of metal having a recess 19, through which the supporting-rods 21 of a pendulum extends. This pendulumsupporting rod is pivoted at its upper end to the pendulum-support 13 and bears at its lower end a pendulum 22. This pendulum does not of itself swing in operation, but it does this in effect, in that its pivotal connection allows the support to swing, while the pendulum remains stationary.

A forked or double pawl 23 is eccentrically pivoted to the stud 11, as shown in Fig. 1 of the drawings, which pawl as the stud is rotated through the medium of the gear 10, keyed 'thereto, is given a vertical reciprocation, so that its forked end may engage the ratchets on the ratchet-wheel'15. When the pawl is held in a certain position, neither of the arms engage the teeth of the ratchetwheel; but when it is moved to the right or left from this position then the pawls engage the teeth and rotate the ratchet-wheel in one or the other direction.

A weight-support 24 for weights 25 is secured 'to the extension 12. A flexible connection 26 is secured to the nut 17, this connection passing about suitable sheaves 27 to a valve-lever 28 of a valve 29, that controls the supply of steam through the pipe 30 to the drying-cylinde Steam is suppliedfrom the same source and under the same pressure to all the cylinders, and the connection between the pipe 30' and these cylinders may be of any desired form. A weight 31 may be employed to insure closing of the valve 29.

The operation of the device is as follows: The rotation of the ratchet 15 by the movement ofthe pawls 23 controls the delivery of heat to the drying-cylinders, and it will thus be evident that when the pawl is in such position as not to engage the ratchet the proper degree of heat is being maintained in the cylinders. The mechanism is so arranged that the pawls 23 are disengaged. in their movement from the ratchet 15 when the frame 12 is at about a horizontal position. The condition of the web of paper 3 as to dryness as it passes the tension-roller 4 may be determined from the condition of the paper as it leaves the machine, and the position of the frame 12 to maintain the pawls in disengaging operation from the ratchet 15 is determined by the amount of weight on the support 24, which weight opposes the pressure upon the tensionroller 1 caused by the tension of the web 3. It being assumed that the paper as it passes the roller 4 and as it leaves the machine is in proper condition as to dryness, and with the web in this condition the pawls 23 in their movement are held disengaged from the ratchet 1.5. Should the web as it passes the roll 4 for any reason become more moist, the tension thereon of course will be decreased. This decreased pressure upon the roll 4 will allow it to move to the right from the position shown in Fig. 1, swinging the frame 12 and carrying the pendulum-support 13 to the left. The pendulum-supporting rod 21 is also carried to the left, swinging the pawl, so that the branch having the straight end engages with the teeth on the ratchet 15, moving the ratchet in the downward travel of the pawl caused by the rotation of the stud 11. The thread on the shaft 14 being a left-hand thread, this rotation of the shaft caused by engagement of the pawl 23 with the ratchet 15 moves the nut 17 to the right, pulling upon the connection 26 and opening the valve 29 to admit more steam to the cylinders. As the heat in the cylinders increases and the paper becomes more dry, at the point at which it passes the roll 4 the tension on the web will be increased and the frame 12 will be forced to its former position, so that the pawls 23 will be held in disengaging movement with the ratchet 15. Should the heat in the cylinders be too great and the tension on the web 3 become increased, the mechanism of course will operate in the reverse direction and shut off the supply of heat to the cylinders. The end walls of the recess 19 in the endulum-actuator 18 will engage the pen ulum-supporting rod 21, and thus free the pawls from engagement with the ratchet 15 when the nut 17 has been moved to a sufficient degree. This is necessary for the rea son that the heat may not act quickly enough upon the cylinders to cause the paper to be dried to the proper condition before the nut has reached such point that the walls of the recess engage said lever, and this actuator is provided for the purpose of preventing the opening or closing of the .valve 29 to an improper degree.

l/Vhat I claim as my invention, and desire to secure by Letters Patent, is-- 1. A regulator for paper-making machines including a tension-roll to engage a web passing through the machine, a threaded shaft, a ratchet-wheel secured to said shaft, a pawl to move said shaft in opposite direc tions, means connected with the tension-roll for reciprocating said pawl, means dependent on the pressure of the web upon the roll for determining the engaging or disengaging position of the pawl, a nut engaging said screw-threaded shaft, means for controlling the supply of heat to the machine, and con nections between said nut and the supplycontrolling means.

2. A regulator for machines for drying a web passing therethrough, a tension device to engage said web, a threaded shaft, a ratchet-wheel secured to said shaft, a pawl to move said shaft in opposite directions, means for reciprocating the pawl, means dependent on the pressure of the web upon the tension device for determining the engaging or disengaging position of the pawl, a nut engaging said screw-threaded shaft, means for controlling the supply of heat to the machine, and connections between said nut and the supply controlling means.

3. A regulator for paper-making machines including a tension device to engage a web passing therethrough, a ratchet-wheel to receive movement in opposite directions, a pawl operatively connected with the tension device to move the ratchet-wheel in opposite directions, a movable member operatively connected with the ratchet-wheel, a pendulum device for controlling the engaging and disengaging positions of the pawl, dependent on the pressure of the web upon the roll, means for controlling the supply of heat to the machine, and connections between the movable member and the supply-controlling means.

4. A regulator for paper-making machines including a tension-roll to engage a web pass ing through the machine, a regulator-frame rigidly connected with the tension-roll, a ratchet-wheel mounted on said frame, a pawl operatively connected with the tension-roll to move the ratchet in opposite directions, a pendulum device mounted on the frame to control the engaging and disengaging positions of the pawl, a member movable in opposite directions by the operation of the ratchet-wheel, means for controlling the supply of heat to the machine, and connections between the movable member and supplycontrolling means.

5. A regulator for paper-making machines including a tension device to engage a web of paper passing therethrough, a regulatorframe rigidly connected therewith, a screwthreaded shaft mounted in the regulatorframe, a ratchet-wheel secured to said shaft, a reciprocating pawl, means for reciprocating the pawl, a pendulum mounted on the regulator-frame and connected with the pawl to control its engaging and disengaging positions, a nut engaging the screwthreaded shaft, means for controlling the supply of heat to the machine, and connections between said nut and supply-controlling means.

6. A regulator for paper-making machines including a tension-roller to engage a web passing therethrough, a regulator-frame rigidly connected therewith, a screw-threaded shaft mounted on the frame, a two-faced ratchet-wheel secured to the shaft, a forked pawl to engage the teeth on the ratchetwheel, means for reciprocating the pawl, a pendulum device mounted on the frame, and connected with the ratchet to control its engaging and disengaging positions, a nut mounted on the screw-threaded shaft, means for controlling the supply of heat to the machine, and connections between the nut and supply-controlling means.

7. In a regulator for paper-making machines including a tension-roll to engage a web passing through the machine, a regulator-frame rigidly connected with said roll, a screw-threaded shaft mounted in the frame, a ratchet-wheel secured to said shaft, a reciprocating pawl to move said shaft in opposite directions, means for reciprocating the pawl, a pendulum device mounted on the frame to control the engaging and disengaging positions of the pawl, a nut mounted on said shaft, means for controlling the supply of heat to the machine, and connections between said supply-controlling means and the nut.

8. A regulator for paper-making machines including a tension-roll to engage a web passing through the machine, a regulator-frame rigidly connected with the tension-roll, a ratchet-wheel mounted on said frame, a pawl to rotate said ratchet-wheel in opposite directions, means for reciprocating the pawl, a pendulum device mounted on the regulatorframe to control the engaging and disengaging positions of the pawl, a member movable in opposite directions by the rotation of said ratchet-wheel, connections between the movable member and ratchet-wheel, means for controlling the supply of heat to the machine, and connections between the movable member and supply-controlling means.

9. A regulator for paper-making machines including a tension-roll to engage a web passing through the machine, a regulator-frame rigidly connected to move with the roll, a

screw-threaded shaft mounted on said frame,

said gear, a ratchetwheel mounted on saidframe and engaged by said pawl to move it in opposite directions, a pendulum device for determining the engaging and disengaging positions of the pawl, a member movable in opposite directions by said ratchet-wheel, means for controlling the supply of heat to the machine, and connections between said movable member and supply controlling means.

11. A regulator for paper-making machines including a tension-roll to engage a web passing through the machine, a gear secured to the tension-roll, a regulator-frame rigidly connected to move with the roll, a gear mounted on the frame in engagement with the gear on the tension-roll, a pawl eccentrically mounted on the gear on the frame, a screw-threaded shaft mounted on the regulator-frame, a ratchet-wheel secured to said shaft to be engaged by said pawl, a pendulum device mounted on the frame, connections between the pendulum device and ratchet for determining the engaging and disengaging positions of the latter, a nut mounted on the screw-threaded shaft, means for controlling the supply of heat to the machine, and connections between said nut and supply-controlling means.

12. A regulator for paper-making machines including a tension-roll to engage a web passing through the machine, a regulator-frame rigidly connected with the tensionroll, a ratchet-wheel mounted on the frame, a pawl to move said ratchet in opposite directions, means for moving the pawl, a pendulum device mounted on the frame to control the engaging and disengaging positions of the pawl, a member movable in opposite directions by the operation of the ratchetwheel, means for controlling the supply of heat to the machine, and connections between the movable member and supply-controlling means.

13. A regulator for paper-making machines including a tension-roll to engage a web passing through the machine, a gear secured to the tension-roll, a regulator-frame rigidly connected to move with said roll, a gear mounted on said frame in engagement with a gear on the tensionroll, a reciprocating awl, means for reciprocating the pawl, a ratc et-wheel mounted on said frame and engaged by said pawl to move it in opposite directions, a pendulum device for determining the engaging and disengaging positions of the pawl, a member movable in opposite directions by said ratchet-wheel, means for controlling the supply of heat to the machine, and connections between said movable member and supply-controlling means.

14. A regulator for paper-making machines including a tension-roll to engage a web passing through the machine, said roll having an extended shaft, a regulatorframe having an opening for the reception of said shaft, a gear secured to said shaft within said 1 frame, a gear mounted on the frame in engagement with the gear on said shaft a pawl operatively mounted with respect to a ratchet-wheel, means for reciprocating the pawl, a movable member operatively connected with the ratchet, means for supplying heat to the paper-machine, and connections between the heat-supply and said movable member.

WILLIAM F. PIOKLES. Witnesses:

ARTHUR B. JENKINS, LENA V. BIRKOVITCH. 

